Bone-black furnace.



o. P. monats. Bom; BLAGK IUKNAOB. nrmlouxon Hmm H1114. 1910.

Fatemiy peo; 13,1910.

mafmeav'a:

O. P. NICHOLS. BNB BLACK FURNAGB. .urnmmlox FILED MBA, 1910.

rammed Dec. 13,1910.

n saura-gum 2.

130 -drawin lUNITED 'STATE-s ORSON P. NICHOLS, OF WARREN, PFNNHYLVANIA.

BONE-BLACK FURNACE.

Specoaton of Letters Patent.' Patented Dec. 13, 1910.

Application filed February 4, 181,0. Serial No. 542,079.

.5 ren and State of Pennsylvania, have iiivented a new and' usefulImprovement in Fone-Black iirnaces, of which the following is -aspecifica tion.

ing or reclaiming bone, fullers earth, or other filtering material whichhas been used in oil relinerics or other places for-filtering purposes.'A

`Heretofore suoli furnaces have ordinarily been constiiictcd'in thegreater part of iron or steel. which r'endcred them liahle to burnout'quickly 'and made therii expensive'to keep in repair an'd diieult topreserve in good running order.

The object of my present invention -is to obviateA such ditculties and'to providc'a furnace for `the purpose mentioned which shall beinexpensive in construction, durable, easy to keep in repair, :mdextremely etfi-` 'cent iii-operation.

" I hall now describe my invention so that others-skilled ginitlie nrt:to which it appermay manufacture and use the smile, refcrencelheing':had to thv accompanying 'forming partof this specification,

in.v`vhic Figure Iis a. of Fig. 2, looking toward the left.. Fig. 2`isavertical section on the line Il -II of #5 Fig. 1. Fig. Bis a.horizontalcmss-section on the line III-:III of Fig. 2. .Fi 4 is ahorizontal cross-section on the line T IV of Fig, 2. Fig. 5 is a view ofa modification ofA one of theY features of my improved fur i partis' theseveralgures;

In 'thedrawingg theurnacc is shown as airing sxseparate andindividualburningshafts 2; each provided at its bottom with a s or other burner 3,and an outlet lLfor the iirnedjor reclaimed-bone, .fullers earth, o'r

-. Like symbols of reference indicate like assumed wenn., M the''mmf-.me

furnace the shafts 2 lead into the stacks oi: outlets 5. At. one side ofthe furnace near the top tthereof .and extending across the j same -isa. hopper 6 for supplying 'the burning-shafts 2 with the bone or othermaterial to be burned,-cleanedl and purified. The bottom of this hopperis provided with a M. invention relates to furnaces for burn- 13 adaptedto be o rate vcrticalxsectioii ou the'liiie" fixed floor-plate 7 havinghole's or openin 6 therein, and also with an adjustablesli ing plate 9provided with holes oropenings The slide. 9 isroperated to'bring theholes 10 and .8-more or less in register with 60 y each other and thusvary the size ofthe feed openings leading toA the shafts 2 or-entirelycutoli the saine, b means of a -rack 11on the end of the, sli in platewhich meshes with a pinion V12 on t e u rend of a rod 65 y-a handfwheel14 on its lower en 15 are rails by wliich cars carryin bone or other`-material to be burn are brought over' the hopper 6. 70

Leading froni't-he openin 8 in the floorplate 7, are incliiies 16, which.feed the ma.- terial into the shafts 2. Each of the shafts 2 isprovided with a series of 'baille projec'- tions 17, provided with do'.ynwardly-m- 75 clined upper'surfaces andextending about midway acrossthe shaft' alternately. from opposite sides thereof for. the pur-pose ofivingto the bone or other matri urncd a zig-z agor tortuous course down'80 the shaft fromgrits'lentrance over the incline 16 to its'exit at thedischarge outlet 4r. A

As will be observed, the-outer or inclosng walls of the furnace,theinncr division walls forming the shafts 2, 'tlie'stack'prtiosi I-"tlirougli the openings 8L-10. into the shafts .2, down which t passes,being diverted from :i straight vertical course or path bythw bailleprojections 17, which throw it yfrein-10u side to side of the shafts,thus submit it thoroughly, to the flame and heat ascen the .shafts fromthe burners- 3,so that-it,"` emerges from the outlets 4 thoroughly, lburned and cleaned, freed of all impurities, and ready. for reuse. Thefeed 'of the bone or otheiyniaterial from the lhopper 6 to the shafts 2may be altered b varying the size of the openings S, or sai openings.may be.

,entirely closed. and die' feed stopped, byl'll shown, are employed tobreak up the course.

of the material down the. shafts.

- I c'laim:- y.

1. A furnace for burning bo'ne, fullers earth, and other filteringmaterial, having a l ll5 Corrections in Letters Patent No. 978,625.

'series of burning shafts each provided with a burner and an outlet forthe burnedmaterial at its bottom, and a-feed hopper at the sideof thefurnace having al series of openin'gs `'corresponding with the number ofshafts and adapted to feed the material into the upper portion of saidshafts, said shafts-Y being each provided with bathe projections withinclined upper surfaces extendingpartially across the shafts alternatelyfrom op- Patent varied to vary the .feed o material to the shafts, saidshafts being rovided with baille projections with incline .uppersurfaces extending partiallyacross the shaft alternately fromopposite'sides thereof. Y

In witness whereof Iv have hereuntoset my hand,

l -onsoN r. NICHOLS.,

Witnesses: i V- HAnrY- S. -Prl'ramsoNa l Maumee M. Rnrxnns'.

I t is hereby certiied that in Letters .fdtent No, 97V8,625,yxgrantedDecember 13, 1910, uponz the application of Orson R'lioholg-I'of\f'arreii PennsylvaniaQ'V-for an improvement' in Bone-Black Furnaces,errors appear in printed specilieatiof;l requiring correction follows:Page 1, line 101, beforelthev'word fthusfv the vvoi'd and should beinserted,and same page,`line after'the i commashould be stricken out;and that the said should be read with these corrections. therein that'the same may conform to the record of thecase in the 4Signed and sealedthis 17th day of Janue.ry,A:D.,` 1911. i i

o. BILLINGS, Acting of Patente shown, are employed to break up thecourse.

of the material down the. shafts.

- I c'laim:- y.

1. A furnace for burning bo'ne, fullers earth, and other filteringmaterial, having a l ll5 Corrections in Letters Patent No. 978,625.

'series of burning shafts each provided with a burner and an outlet forthe burnedmaterial at its bottom, and a-feed hopper at the sideof thefurnace having al series of openin'gs `'corresponding with the number ofshafts and adapted to feed the material into the upper portion of saidshafts, said shafts-Y being each provided with bathe projections withinclined upper surfaces extendingpartially across the shafts alternatelyfrom op- Patent varied to vary the .feed o material to the shafts, saidshafts being rovided with baille projections with incline .uppersurfaces extending partiallyacross the shaft alternately fromopposite'sides thereof. Y

In witness whereof Iv have hereuntoset my hand,

l -onsoN r. NICHOLS.,

Witnesses: i V- HAnrY- S. -Prl'ramsoNa l Maumee M. Rnrxnns'.

I t is hereby certiied that in Letters .fdtent No, 97V8,625,yxgrantedDecember 13, 1910, uponz the application of Orson R'lioholg-I'of\f'arreii PennsylvaniaQ'V-for an improvement' in Bone-Black Furnaces,errors appear in printed specilieatiof;l requiring correction follows:Page 1, line 101, beforelthev'word fthusfv the vvoi'd and should beinserted,and same page,`line after'the i commashould be stricken out;and that the said should be read with these corrections. therein that'the same may conform to the record of thecase in the 4Signed and sealedthis 17th day of Janue.ry,A:D.,` 1911. i i

o. BILLINGS, Acting of Patente Corrections In Letter Patent No. 978,625.

1t is hereby certified that in Letters Pwent No. 978,625, grantedDecember 13,

1910, upon the application of Orson P. Nichols, of 'arre'n,Pennsylvania, for an improvement in Bone-Black Furnaces, errors appearin the printed specification requiring correction as follows: Page 1,line 101, before the Word thus the word and ehould be inserted, and samepage, line 102, after the irvoi'd thoroughly the comma. should bestricken out; und that the said Lettere Patent should be read with thesecorrectionsl therein that the same may conform to the record of the casein the Patent Office.

Signed and sealed this 17th day of January, A. D., 1911.

C. C. BILLINGS,

[SEAL]

